From 21da6eb1f8a9740de03cb1435bf935f5a3609a37 Mon Sep 17 00:00:00 2001
From: "erikkay@google.com"
 <erikkay@google.com@0039d316-1c4b-4281-b951-d872f2087c98>
Date: Mon, 3 Nov 2008 17:18:14 +0000
Subject: * Add write and read/write support to FileStream (renamed from
 FileInputStream). * Moved net/disk_cache/os_file to base/platform_file.

Review URL: http://codereview.chromium.org/8843

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@4454 0039d316-1c4b-4281-b951-d872f2087c98
---
 net/base/file_stream_unittest.cc | 369 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 369 insertions(+)
 create mode 100644 net/base/file_stream_unittest.cc

(limited to 'net/base/file_stream_unittest.cc')

diff --git a/net/base/file_stream_unittest.cc b/net/base/file_stream_unittest.cc
new file mode 100644
index 0000000..f3f208b
--- /dev/null
+++ b/net/base/file_stream_unittest.cc
@@ -0,0 +1,369 @@
+// Copyright (c) 2008 The Chromium Authors. All rights reserved.  Use of this
+// source code is governed by a BSD-style license that can be found in the
+// LICENSE file.
+
+#include "base/file_util.h"
+#include "base/path_service.h"
+#include "base/platform_test.h"
+#include "net/base/file_stream.h"
+#include "net/base/net_errors.h"
+#include "net/base/test_completion_callback.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+static const char kTestData[] = "0123456789";
+static const int kTestDataSize = arraysize(kTestData) - 1;
+
+class FileStreamTest : public PlatformTest {
+ public:
+  virtual void SetUp() {
+    PlatformTest::SetUp();
+
+    file_util::CreateTemporaryFileName(&temp_file_path_);
+    file_util::WriteFile(temp_file_path_, kTestData, kTestDataSize);
+  }
+  virtual void TearDown() {
+    file_util::Delete(temp_file_path_, false);
+
+    PlatformTest::TearDown();
+  }
+  const std::wstring temp_file_path() const { return temp_file_path_; }
+ private:
+  std::wstring temp_file_path_;
+};
+
+TEST_F(FileStreamTest, BasicOpenClose) {
+  net::FileStream stream;
+  int rv = stream.Open(temp_file_path(), 
+      base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ);
+  EXPECT_EQ(net::OK, rv);
+}
+
+TEST_F(FileStreamTest, UseClosedStream) {
+  net::FileStream stream;
+
+  EXPECT_FALSE(stream.IsOpen());
+
+  // Try seeking...
+  int64 new_offset = stream.Seek(net::FROM_BEGIN, 5);
+  EXPECT_EQ(net::ERR_UNEXPECTED, new_offset);
+
+  // Try available...
+  int64 avail = stream.Available();
+  EXPECT_EQ(net::ERR_UNEXPECTED, avail);
+
+  // Try reading...
+  char buf[10];
+  int rv = stream.Read(buf, sizeof(buf), NULL);
+  EXPECT_EQ(net::ERR_UNEXPECTED, rv);
+}
+
+TEST_F(FileStreamTest, BasicRead) {
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_READ;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  int64 total_bytes_avail = stream.Available();
+  EXPECT_EQ(file_size, total_bytes_avail);
+
+  int64 total_bytes_read = 0;
+
+  std::string data_read;
+  for (;;) {
+    char buf[4];
+    rv = stream.Read(buf, sizeof(buf), NULL);
+    EXPECT_LE(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_read += rv;
+    data_read.append(buf, rv);
+  }
+  EXPECT_EQ(file_size, total_bytes_read);
+  EXPECT_TRUE(data_read == kTestData);
+}
+
+TEST_F(FileStreamTest, AsyncRead) {
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_READ | 
+              base::PLATFORM_FILE_ASYNC;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  int64 total_bytes_avail = stream.Available();
+  EXPECT_EQ(file_size, total_bytes_avail);
+
+  TestCompletionCallback callback;
+
+  int64 total_bytes_read = 0;
+
+  std::string data_read;
+  for (;;) {
+    char buf[4];
+    rv = stream.Read(buf, sizeof(buf), &callback);
+    if (rv == net::ERR_IO_PENDING)
+      rv = callback.WaitForResult();
+    EXPECT_LE(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_read += rv;
+    data_read.append(buf, rv);
+  }
+  EXPECT_EQ(file_size, total_bytes_read);
+  EXPECT_TRUE(data_read == kTestData);
+}
+
+TEST_F(FileStreamTest, BasicRead_FromOffset) {
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_READ;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  const int64 kOffset = 3;
+  int64 new_offset = stream.Seek(net::FROM_BEGIN, kOffset);
+  EXPECT_EQ(kOffset, new_offset);
+
+  int64 total_bytes_avail = stream.Available();
+  EXPECT_EQ(file_size - kOffset, total_bytes_avail);
+
+  int64 total_bytes_read = 0;
+
+  std::string data_read;
+  for (;;) {
+    char buf[4];
+    rv = stream.Read(buf, sizeof(buf), NULL);
+    EXPECT_LE(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_read += rv;
+    data_read.append(buf, rv);
+  }
+  EXPECT_EQ(file_size - kOffset, total_bytes_read);
+  EXPECT_TRUE(data_read == kTestData + kOffset);
+}
+
+TEST_F(FileStreamTest, AsyncRead_FromOffset) {
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_READ | 
+              base::PLATFORM_FILE_ASYNC;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  const int64 kOffset = 3;
+  int64 new_offset = stream.Seek(net::FROM_BEGIN, kOffset);
+  EXPECT_EQ(kOffset, new_offset);
+
+  int64 total_bytes_avail = stream.Available();
+  EXPECT_EQ(file_size - kOffset, total_bytes_avail);
+
+  TestCompletionCallback callback;
+
+  int64 total_bytes_read = 0;
+
+  std::string data_read;
+  for (;;) {
+    char buf[4];
+    rv = stream.Read(buf, sizeof(buf), &callback);
+    if (rv == net::ERR_IO_PENDING)
+      rv = callback.WaitForResult();
+    EXPECT_LE(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_read += rv;
+    data_read.append(buf, rv);
+  }
+  EXPECT_EQ(file_size - kOffset, total_bytes_read);
+  EXPECT_TRUE(data_read == kTestData + kOffset);
+}
+
+TEST_F(FileStreamTest, SeekAround) {
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_READ;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  const int64 kOffset = 3;
+  int64 new_offset = stream.Seek(net::FROM_BEGIN, kOffset);
+  EXPECT_EQ(kOffset, new_offset);
+
+  new_offset = stream.Seek(net::FROM_CURRENT, kOffset);
+  EXPECT_EQ(2 * kOffset, new_offset);
+
+  new_offset = stream.Seek(net::FROM_CURRENT, -kOffset);
+  EXPECT_EQ(kOffset, new_offset);
+
+  const int kTestDataLen = arraysize(kTestData) - 1;
+
+  new_offset = stream.Seek(net::FROM_END, -kTestDataLen);
+  EXPECT_EQ(0, new_offset);
+}
+
+TEST_F(FileStreamTest, BasicWrite) {
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_CREATE_ALWAYS | 
+              base::PLATFORM_FILE_WRITE;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(0, file_size);
+
+  rv = stream.Write(kTestData, kTestDataSize, NULL);
+  EXPECT_EQ(kTestDataSize, rv);
+  stream.Close();
+
+  ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(kTestDataSize, file_size);
+}
+
+TEST_F(FileStreamTest, AsyncWrite) {
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_CREATE_ALWAYS | 
+              base::PLATFORM_FILE_WRITE | 
+              base::PLATFORM_FILE_ASYNC;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(0, file_size);
+
+  TestCompletionCallback callback;
+  int64 total_bytes_written = 0;
+
+  while (total_bytes_written != kTestDataSize) {
+    rv = stream.Write(kTestData, kTestDataSize, &callback);
+    if (rv == net::ERR_IO_PENDING)
+      rv = callback.WaitForResult();
+    EXPECT_LT(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_written += rv;
+  }
+  ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(file_size, total_bytes_written);
+}
+
+TEST_F(FileStreamTest, BasicWrite_FromOffset) {
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_WRITE;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(kTestDataSize, file_size);
+
+  const int64 kOffset = 0;
+  int64 new_offset = stream.Seek(net::FROM_END, kOffset);
+  EXPECT_EQ(kTestDataSize, new_offset);
+
+  rv = stream.Write(kTestData, kTestDataSize, NULL);
+  EXPECT_EQ(kTestDataSize, rv);
+  stream.Close();
+
+  ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(kTestDataSize * 2, file_size);
+}
+
+TEST_F(FileStreamTest, AsyncWrite_FromOffset) {
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_WRITE |
+              base::PLATFORM_FILE_ASYNC;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  const int64 kOffset = 0;
+  int64 new_offset = stream.Seek(net::FROM_END, kOffset);
+  EXPECT_EQ(kTestDataSize, new_offset);
+
+  TestCompletionCallback callback;
+  int64 total_bytes_written = 0;
+
+  while (total_bytes_written != kTestDataSize) {
+    rv = stream.Write(kTestData, kTestDataSize, &callback);
+    if (rv == net::ERR_IO_PENDING)
+      rv = callback.WaitForResult();
+    EXPECT_LT(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_written += rv;
+  }
+  ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(file_size, kTestDataSize * 2);
+}
+
+TEST_F(FileStreamTest, BasicReadWrite) {
+  int64 file_size;
+  bool ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+
+  net::FileStream stream;
+  int flags = base::PLATFORM_FILE_OPEN | 
+              base::PLATFORM_FILE_READ | 
+              base::PLATFORM_FILE_WRITE;
+  int rv = stream.Open(temp_file_path(), flags);
+  EXPECT_EQ(net::OK, rv);
+
+  int64 total_bytes_avail = stream.Available();
+  EXPECT_EQ(file_size, total_bytes_avail);
+
+  int64 total_bytes_read = 0;
+
+  std::string data_read;
+  for (;;) {
+    char buf[4];
+    rv = stream.Read(buf, sizeof(buf), NULL);
+    EXPECT_LE(0, rv);
+    if (rv <= 0)
+      break;
+    total_bytes_read += rv;
+    data_read.append(buf, rv);
+  }
+  EXPECT_EQ(file_size, total_bytes_read);
+  EXPECT_TRUE(data_read == kTestData);
+
+  rv = stream.Write(kTestData, kTestDataSize, NULL);
+  EXPECT_EQ(kTestDataSize, rv);
+  stream.Close();
+
+  ok = file_util::GetFileSize(temp_file_path(), &file_size);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(kTestDataSize * 2, file_size);
+}
+
+// TODO(erikkay): more READ_WRITE tests?
-- 
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